The Introduction of cleaner device of seeds of agricultural crops by electrostatics method (Case study: sunflower seed)

فتاحی, سیدحسین and حاضروظیفه, امین The Introduction of cleaner device of seeds of agricultural crops by electrostatics method (Case study: sunflower seed). In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

Seed separation and cleaning is one of the important processes in obtaining pure high quality seed. Cleaning is one of the postharvest technologies that is important for the production of healthy horticultural, pharmaceutical, greenhouse and organic products Electrostatic separation is based on differences in the ability of particles to develop and maintain electric charges. In this study, a high tension roll‐type electrostatic separator was constructed to extract pure sunflower seed and remove impurities. An extended corona discharge field was generated by three wire type electrodes in the roll-type separator. The effects of the roll rotational speed, the electrode distance from the roll and the amount of power supply as effective factors in separation were examined on mixture of pure sunflower. The experiment was performed in the form of factorial analysis based on a randomized complete block design with three replications. Results of comparison of means showed that the factors of rotational speed and electrode distance from roll had positive effect on the purity of sunflower seed, whereas the effect of power supply voltage was negative. Results of the comparison of means Also showed that in greater distance on roll (6 cm), the factor of rotational speed has considerable effect on sunflower detachment (through centrifugal force. The best separation was made with efficiency of 81.5 % in the treatment combination 60rpm, 6cm and 20kV.

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